NR-U BS Demodulation Requirements and CG-UCI Simulation Assumptions

The document provides detailed information on the demodulation requirements for NR-U base stations, including test applicability rules for PUSCH/PUCCH and CG-UCI requirements. It discusses parameters such as subcarrier spacing, channel bandwidth support, CG-UCI configuration, simulation assumptions, and test metrics. The content covers specific RB configurations, HARQ processes, RV sequences, NDI options, and more related to NR-U demodulation. Additionally, it outlines the simulation assumptions for CG-UCI, including TDD UL-DL patterns, MCS values, DMRS configurations, and UCI partitioning. The details serve as a comprehensive guide for understanding the technical aspects of NR-U BS demodulation requirements and CG-UCI simulations.

• NR-U
• Demodulation
• PUSCH
• PUCCH
• CG-UCI

nial_1 Follow

Uploaded on Feb 26, 2025 | 0 Views

Download Presentation

Please find below an Image/Link to download the presentation.

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.

Presentation Transcript

1. 3GPP TSG-RAN WG4 Meeting #98-bis-e Electronic Meeting, April 12th 20thApril, 2021 R4-2106010 Way forward on NR-U BS demodulation requirements Huawei, HiSilicon

2. Test applicability rules for PUSCH/PUCCH o For each subcarrier spacing declared to be supported, the tests for a specific channel bandwidth shall apply only if the BS supports it (see D.xx in table 4.6-1). Unless otherwise stated, for each subcarrier spacing declared to be supported, the tests shall be done only for the widest supported channel bandwidth. If performance requirement is not specified for this widest supported channel bandwidth, the tests shall be done by using performance requirement defined for 20MHz channel bandwidth. For 15kHz SCS: For PUSCH test and PF0, PF1, PF2 test, the tested RB s are uniformly spaced over the channel bandwidth at RB index {110, 120, , 210} For PF3 test, the tested RB s are uniformly spaced over the channel bandwidth at RB index {110, 120, , 200} For 30kHz SCS: For PUSCH test and PF0, PF1, PF2 test, the tested RB s are uniformly spaced over the channel bandwidth at RB index {55, 60, ,105} For PF3 test, the tested RB s are uniformly spaced over the channel bandwidth at RB index {55, 60, ,100}

3. CG-UCI requirements BetaOffsetCG-UCI-index configuration BetaOffsetCG-UCI-index = 8 Number of CG-UCI information bits 18 bits Pattern of CG-UCI information bits Use a bit pattern {c0,c1, ,c17} that consists of : HARQ process number: [c0,c1,c2,c3] = [0 0 0 1] RV sequence: [c4,c5] = [0 0] NDI: [c6] Option 1: [c6] = [1] Option 2: [c6] = toggle for every new transmission, e.g. 0 for even transmissions and 1 for odd ones COT sharing information field: [c7,c8, c17] = [0,0,0,0,0,0,0,0,0,0,0]

4. Simulation assumptions for CG-UCI Value Parameter TDLA30-10 Low Channel model 20MHz Bandwidth Disabled Transformprecoding 30 kHz SCS:7D1S2U, S=6D:4G:4U 15 kHz SCS: 3D1S1U S=10D:2G:2U Default TDD UL-DL pattern MCS 20 MCS 1 HARQ Maximum number of HARQ transmissions 0 RV sequence 1 DM-RS configuration type DM-RS duration Additional DM-RS position Number of DM-RS CDM group(s) without data Ratio of PUSCH EPRE to DM-RS EPRE DM-RS port(s) DM-RS sequence generation DMRS Single-symbol DM-RS pos1 2 -3 dB {0} NID0=0, nSCID=0 A, B Time domain resource assignment PUSCH mapping type 0 Start symbol 14 Allocation length 1 interlace Frequency domain resource assignment RB assignment Disabled Frequency hopping Disabled Code block group based PUSCH transmission SNR@1% BLER of CG-UCI Test metric 18 UCI NumberCG-UCI information bits 1 Scaling 8 betaOffsetCG-UCI index Disabled UCI partition for frequency hopping

5. PUCCH requirements Test metric for PF3 Prob(DTX->ACK)<=1% and Prob(ACK miss)<=1% Pattern of information bits PF0: [0] including HARQ-ACK information only PF1:[0 1] including HARQ-ACK information only PF3: [0 0 0 0] including HARQ-ACK information only Pattern of PF2 information bits Random information bits selection

6. PRACH requirements BS declaration for extended PRACH formats [D.111] PRACH format with LRA = 1151 for 15kHz SCS and LRA = 571 for 30kHz SCS Declaration of the supported PRACH format(s) as specified in TS 38.211 [17], i.e., format: A2, B4, C2. Declaration of the supported SCS(s) per supported PRACH format as specified in TS 38.211 [17], i.e., 15 kHz, 30 kHz or both.

7. Final Performance Requirements Company is encouraged to provide both ideal simulation results and impairment results for PUSCH, CG-UCI, PUCCH and PRACH in next RAN4#99-e meeting (May) Performance requirements will be derived as per the rules used for NR Rel-15 BS performance requirements definition (R4-1904713) The template for the summary of simulation results implemented this rules Formal CRs that capture derived SNR with [ ] will be agreed in next RAN4#99-e meeting (May) Refer to R4-2106134 for CR splitting Target to remove [ ] in upcoming RAN4#100-e meeting (August)